Experimental and Computational Study of Modified Biopolymer Xanthan Gum with Synthetic Vinyl Monomers for Enhanced Oil Recovery

IF 4.7 3区 工程技术 Q2 ENGINEERING, ENVIRONMENTAL
Samah A. M. Abou-alfitooh, F. I. El-Hosiny, A. N. El-hoshoudy
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Abstract

Utilizing xanthan gum, a biodegradable polymer, in enhanced oil recovery (EOR) is imperative wherever there is a need for innovation in oil production that is both cost-effective and environmentally friendly. Xanthan, chosen for its natural sourcing, availability, controllability, eco-friendliness, and biodegradability, proves resilient against harsh reservoir conditions owing to its rigid structure and elongated polysaccharide chains. This study investigates two modified xanthan gum composites, achieved by grafting with synthetic vinyl monomers through emulsified polymerization. Spectroscopic characterization using FTIR and 1H-NMR, along with surface morphology analysis via atomic force microscopy (AFM) and thermal behavior screening through TGA analysis, elucidates the properties of these modified composites. Rheological behavior under reservoir conditions, including stress scanning and viscosity/shear rate dependency, was evaluated. Material modeling with the Materials Studio program simulated the equilibrium adsorption of xanthan and modified biopolymer chains on SiO2-quartz crystal to assess wettability alteration. Simulation results indicate that XG-g-AM, MMA&TEVS exhibit greater stability and surface coverage with more negative electrostatic energies compared to XG and XG-g-AM&MMA. The laboratory runs on a sandstone-packed model to identify the disclosed XG-g-AM&MMA and XG-g-AM, MMA&TEVS biopolymers as promising EOR candidates and wettability modifiers in challenging sandstone reservoirs, as per experimental outcomes.

Abstract Image

用于提高石油采收率的合成乙烯基单体改性生物聚合物黄原胶的实验和计算研究
黄原胶是一种可生物降解的聚合物,在提高石油采收率(EOR)中的应用势在必行,因为在石油生产中需要既经济又环保的创新。黄原胶因其天然来源、可用性、可控性、生态友好性和生物降解性而被选中,由于其刚性结构和拉长的多糖链,黄原胶在恶劣的油藏条件下具有弹性。本研究通过乳化聚合与合成乙烯基单体接枝,研究了两种改性黄原胶复合材料。利用傅立叶变换红外光谱(FTIR)和 1H-NMR 进行光谱表征,并通过原子力显微镜(AFM)进行表面形貌分析,以及通过 TGA 分析进行热行为筛选,阐明了这些改性复合材料的特性。还评估了储层条件下的流变行为,包括应力扫描和粘度/剪切速率依赖性。利用 Materials Studio 程序建立的材料模型模拟了黄原胶和改性生物聚合物链在二氧化硅石英晶体上的平衡吸附,以评估润湿性的改变。模拟结果表明,与XG和XG-g-AM&MMA相比,XG-g-AM、MMA&TEVS表现出更高的稳定性和表面覆盖率,静电负能更大。实验室在一个砂岩包裹模型上运行,根据实验结果确定了已公开的 XG-g-AM&MMA 和 XG-g-AM、MMA&TEVS 生物聚合物,将其作为在具有挑战性的砂岩储层中具有前景的 EOR 候选物质和润湿性改良剂。
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来源期刊
Journal of Polymers and the Environment
Journal of Polymers and the Environment 工程技术-高分子科学
CiteScore
9.50
自引率
7.50%
发文量
297
审稿时长
9 months
期刊介绍: The Journal of Polymers and the Environment fills the need for an international forum in this diverse and rapidly expanding field. The journal serves a crucial role for the publication of information from a wide range of disciplines and is a central outlet for the publication of high-quality peer-reviewed original papers, review articles and short communications. The journal is intentionally interdisciplinary in regard to contributions and covers the following subjects - polymers, environmentally degradable polymers, and degradation pathways: biological, photochemical, oxidative and hydrolytic; new environmental materials: derived by chemical and biosynthetic routes; environmental blends and composites; developments in processing and reactive processing of environmental polymers; characterization of environmental materials: mechanical, physical, thermal, rheological, morphological, and others; recyclable polymers and plastics recycling environmental testing: in-laboratory simulations, outdoor exposures, and standardization of methodologies; environmental fate: end products and intermediates of biodegradation; microbiology and enzymology of polymer biodegradation; solid-waste management and public legislation specific to environmental polymers; and other related topics.
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